GEOG 2050 Chapter : Geography 2050
Document Summary
9/25/2013 5:30:00 pm: wednesday sept 11, 2013, key concepts, ozone layer, naturally occurring, biological, man-made, atmosphere pressure, noctilucent clouds, exosphere, heterosphere. Naturally occurring (i. e. , not man-made: chemical processes (o3, h2, geological (n2, ar, ne, he, kr, xe, nobel gases (ar, ne, he, kr, xe) Biological e. g. , photosynthesis, respiration, and decomposition (o2, co2, Man-made (n2o, co2, ch4, o3) and other pollutants. Exosphere- outer sphere, nearly a vacuum with scarce h2 and he: extends to 32,000 km (20,000 mi) from earth"s surface, table 3. 2. Heterosphere (layered: outer atmosphere, 80 km (50 mi) outward, to thermopause, gases layered by weight/gravity not evenly mixed, <0. 001% of atmosphere mass. Homosphere (mixed) inner atmosphere: surface to 80 km (50 mi, gases evenly blended, except for ozone layer. Atmospheric pressure = f/a fig 3. 3: surface = 1 atm = 1-13. 2 mb as you move up pressure drops to almost 0.
